CVE-2026-109634 in ERPNext
Summary
by MITRE • 10/13/2026
Frappe ERPNext before 15.121.0 and 16.x before 16.34.0 contains an SQL injection vulnerability in some endpoints due to missing input validation. Authenticated attackers with high privileges can send specially crafted requests to these endpoints to inject SQL and extract sensitive information from the database.
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Analysis
by VulDB Data Team • 10/13/2026
The identified security flaw resides within Frappe ERPNext versions prior to 15.121.0 for the v15 branch and before 16.34.0 for the v16 branch, representing a critical SQL injection vulnerability affecting specific API endpoints. This weakness stems from insufficient input validation mechanisms when processing user-supplied data within these targeted interfaces. In enterprise resource planning systems like ERPNext, such endpoints often handle sensitive operational data including financial records, customer details, and internal configuration settings. The absence of proper sanitization or parameterized query handling allows malicious actors to manipulate the structure of SQL commands executed by the backend database server. This type of vulnerability is classically categorized under CWE-89 Improper Neutralization of Special Elements used in an SQL Command within standard security taxonomies, highlighting a fundamental failure in input validation protocols that are essential for maintaining data integrity and confidentiality.
The operational impact of this vulnerability is severe due to the specific privilege requirements associated with its exploitation. While many injection flaws can be exploited by unauthenticated users or those with low-level access, this particular instance requires authenticated attackers possessing high privileges. This constraint implies that an adversary must first compromise a user account with elevated permissions within the ERPNext environment before they can leverage the flaw. Once such access is obtained, typically through credential theft, phishing, or other initial access vectors, the attacker can send specially crafted HTTP requests to the vulnerable endpoints. These requests contain injected SQL payloads designed to alter query logic, bypass authentication checks, or extract arbitrary data from the underlying database schema. The ability of high-privilege users to execute these injections significantly amplifies the risk profile, as compromised administrative accounts are often targeted by advanced persistent threats seeking long-term access and deep system penetration.
From a tactical perspective, this vulnerability aligns with ATT&CK technique T1059 Command and Scripting Interpreter subcategories related to SQL commands, specifically facilitating data exfiltration via database interaction. The exploitation path allows for the extraction of sensitive information such as plaintext passwords stored in hash formats, personally identifiable information (PII), financial transaction logs, and proprietary business intelligence contained within the ERP system's tables. This data leakage can lead to significant regulatory compliance violations under frameworks like GDPR or HIPAA if applicable, alongside substantial reputational damage and potential financial loss for the affected organization. The vulnerability underscores the importance of rigorous input validation not just at the application layer but also in how database queries are constructed dynamically based on user inputs within high-traffic enterprise applications.
Mitigation strategies must prioritize immediate patching to the specified safe versions, specifically upgrading Frappe ERPNext to version 15.121.0 or later for v15 users and version 16.34.0 or later for v16 users. These releases contain code changes that implement proper input sanitization and utilize parameterized queries to prevent SQL injection attacks. In addition to patching, organizations should enforce strict role-based access control (RBAC) policies to minimize the number of high-privilege accounts within the system, thereby reducing the attack surface for this specific vulnerability. Implementing Web Application Firewalls with updated signatures can also provide a layer of defense by detecting and blocking malformed SQL patterns in incoming requests. Furthermore, regular security audits focusing on input validation practices across all API endpoints are recommended to identify similar weaknesses before they can be exploited by malicious actors seeking to compromise critical business infrastructure.